What brand are the jeans? When I think about my shirts, socks, and underwear, all of it lasts 4-6 years.. though my socks are 6 years old and I see no sign of needing to replace them any time soon.
However, I have a stack of jeans that all start coming apart in the same spot. I've started looking into how to mend jeans, as I'm sick of this being an issue. They are the most expensive thing I'm wearing (other than shoes) and seem to be the least durable. Though I do wear them 7x more often than the other articles, so I guess I should take that into account.